The sweet tattie (Ipomoea batatas) is a dicotyledonous plant that belangs the faimily Convolvulaceae. Its lairge, starchy, sweet-tastin, tuberous ruits is a ruit vegetable.[1][2] The young leafs an shoots is whiles etten as greens. O the thareby 50 genera an mair than 1,000 speshies o Convolvulaceae, I. batatas is the anly crap plant o major importance—some ethers is uised locally, but mony is actually pushionous. The sweet tattie is anely distantly relatit tae the tattie (Solanum tuberosum) an disnae belang the nightshade faimily.

The genus Ipomoea that conteens the sweet tattie includes several gairden flouers cried mornin glories, though that term isnae uisually stendit tae Ipomoea batatas. Some cultivars o Ipomoea batatas is grown as ornamental plants; the name "tuberous morning glory" mey be uised in a horticultural context.